144 is 45% of the total customers who took the survey.
Total customers who took survey= 144 × 100/45 = 320
-36x<8 divide both sides by -36 (reversing the direction of the inequality sign because of division by a negative number)
x>-8/36 the largest common factor of 8 and 36 is 4 so divide numerator and denominator by this factor, 8 to simplify the fraction
x>-2/9 or in proper notation, x=(-2/9, +oo)
9/21 simplifies to 3/7 because 9+8+4=21 and 9 is the number of daffodils and 21 is the total number and if you divide 9/21 by 3 is simplifies to 3/7
I believe that x = 2 and y = -2
